Slip the Kensington Pocket Battery Pack for Smartphones into your pocket and you've got everything you need to give your Blackberry, Nokia, Motorola, Samsung, HTC, LG or other smartphones a fresh charge. The Pocket Battery Pack for Smartphones adds 3.5 hours of additional talk time*, and has both mini and micro USB charging cables as well as a USB charging tip built right in for recharging so there are no parts to lose.